scholarly journals The hidden value of large-rotor, tall-tower wind turbines in the United States

2020 ◽  
pp. 0309524X2093394 ◽  
Author(s):  
Ryan Wiser ◽  
Dev Millstein ◽  
Mark Bolinger ◽  
Seongeun Jeong ◽  
Andrew Mills
Keyword(s):  
Cost Minimization ◽  
The United States ◽  
Market Penetration ◽  
Wholesale Market ◽  
Design Considerations ◽  
Electricity System ◽  
Levelized Cost ◽  
Cost Of Energy ◽  
Tower Height ◽  
Large Rotor

The significant upscaling of wind turbine size (nameplate capacity, rotor diameter, and tower height) has, to date, been driven primarily by a goal of minimizing the levelized cost of energy. But with wind’s levelized cost of energy now comparable with that of other generating resources, other design considerations besides cost-minimization have grown in importance—particularly as wind’s increasing market penetration begins to impose challenges on the electric grid. We find that taller towers and larger rotors (relative to nameplate capacity) can enhance the value of wind energy to the electricity system and provide other “hidden” benefits. Specifically, in regions where wind penetration has reached around 20%, we find a boost in wholesale market value of US$2–US$3/MWh. This is augmented by transmission, balancing, and financing benefits that sum to roughly US$2/MWh. The aggregate potential value enhancement of US$4–US$5/MWh is comparable with a 10%–15% reduction in levelized costs.

scholarly journals LEVELIZED COST OF ENERGY (LCOE) ANALYSIS OF HEXCRETE WIND TOWERS

2018 ◽  
Author(s):  
Ali Nahvi
Keyword(s):  
Power Generation ◽  
Wind Energy ◽  
Wind Power ◽  
The United States ◽  
Wind Power Generation ◽  
Department Of Energy ◽  
Energy Output ◽  
Gis Mapping ◽  
Levelized Cost ◽  
Cost Of Energy

Wind power generation has witnessed a dramatic growth in the 21st century. The Department of Energy (DOE) had a vision for wind energy that it would change into an extensively greater part of overall power generation in the U.S. by 2050. As specified by the DOE, wind power generation has grown by trifold from 2008 to 2013. This study presents a constructible, financially feasible alternative wind tower design to the 80 m steel tower platform which has the potential to decrease the overall Levelized cost of energy (LCOE). A hexagonal concrete wind tower solution is evaluated to facilitate the fabrication of a taller wind turbine generator to harvest more powerful, stable, and frequent wind resources for elevating wind energy production to cut down the overall LCOE. Subject matter experts from the industry were benefitted from to develop a process and estimate the cost and schedule of development and assembly of this process. To mitigate uncertainties and quantify risks, a sensitivity analysis was carried out on cost and schedule estimates. Also, estimating LCOE of wind towers is a primary requirement for efficient assimilation of wind power generation in the electricity market. In the state of Iowa, wind power is rapidly becoming a significant electricity generator. Unpredictable outputs and different options for deploying wind towers are one of the major problems of power system operators. Good estimation tools are important and will be needed to integrate wind energy into the economic power plant. The other objective of this research is to propose a GIS-based map to visualize LCOE of different wind tower construction options in various locations. Therefore, wind speed GIS mapping by using weather information will be crucial. Calculation of energy output by applying wind gradient formula to wind speeds energy are performed. The research concludes of Hexcrete towers can be achieved by use of the 120m and 140 m Hexcrete tower platform on certain wind sites in the United States.

scholarly journals Opportunities for and challenges to further reductions in the “specific power” rating of wind turbines installed in the United States

2020 ◽  
pp. 0309524X1990101 ◽  
Author(s):  
Mark Bolinger ◽  
Eric Lantz ◽  
Ryan Wiser ◽  
Ben Hoen ◽  
Joseph Rand ◽  
...  
Keyword(s):  
United States ◽  
Economic Incentive ◽  
The United States ◽  
Power Markets ◽  
Specific Power ◽  
Levelized Cost ◽  
Cost Of Energy ◽  
Reasonable Cost ◽  
Capacity Constrained ◽  
Swept Area

A wind turbine’s “specific power” rating relates its capacity to the swept area of its rotor in terms of Watt per square meter. For a given generator capacity, specific power declines as rotor size increases. In land-rich but capacity-constrained wind power markets, such as the United States, developers have an economic incentive to maximize megawatt-hours per constrained megawatt, and so have favored turbines with ever-lower specific power. To date, this trend toward lower specific power has pushed capacity factors higher while reducing the levelized cost of energy. We employ geospatial levelized cost of energy analysis across the United States to explore whether this trend is likely to continue. We find that under reasonable cost scenarios (i.e. presuming that logistical challenges from very large blades are surmountable), low-specific-power turbines could continue to be in demand going forward. Beyond levelized cost of energy, the boost in market value that low-specific-power turbines provide could become increasingly important as wind penetration grows.

scholarly journals U.S. Clean Carbon Costs: An Investigation of Georgia Markets and Solar Technology [Kennesaw State University]

2019 ◽  
Author(s):  
Carnell Tate ◽  
Sridhar Palle ◽  
Jeffrey Wagner
Keyword(s):  
State Level ◽  
The United States ◽  
Energy Costs ◽  
State University ◽  
Carbon Costs ◽  
Geographical Variations ◽  
Levelized Cost ◽  
Cost Of Energy ◽  
The Cost ◽  
Solar Technology

This paper investigates how geographical variations affect energy costs throughout the United States by using a Levelized Cost of Energy (LCOE) model. The objective was to deconstruct a nationwide LCOE model and investigate the assumptions that are made on a state level; in this case, Georgia was the chosen sample to exhibit how challenges in solar technology affect the cost of clean carbon energy.

GRID PARITY OF PV – AN ACCESSIBLE OPPORTUNITY TO ACHIEVE BULGARIA’S RENEWABLE TARGETS BY 2030

2019 ◽  
pp. 239-244
Author(s):  
Georgi Todorov ◽  
Krasimira Keremidchieva
Keyword(s):  
Technological Progress ◽  
Time Frame ◽  
Specific Production ◽  
Final Consumption ◽  
Grid Parity ◽  
Levelized Cost ◽  
Cost Of Energy ◽  
Main Candidate ◽  
Common Vision ◽  
The Eu

On the go is the development and adaptation of an individual target for Bulgaria, in order to increase the share of RES energy, according to the EU common vision for leadership in the implementation of renewables to 32% in the gross final consumption by 2030. The technological progress, the easy applicability and feasibility of the projects, as well as the geographic and climatic specifics of Bulgaria, makes photovoltaic Bulgaria's main candidate for leading technology in this process. With net specific production of 1323kWh/annual per installed kWp, price levels of PV technology of €1360kWp and Levelized cost of energy (LCOE) below €0.12kWh for 20 years time frame, households in Bulgaria are at a stage where photovoltaic projects should be developed as an alternative to the grid supply

The challenges of achieving a 100% renewable electricity system in the United States

Joule ◽  
2021 ◽  
Author(s):  
Paul Denholm ◽  
Douglas J. Arent ◽  
Samuel F. Baldwin ◽  
Daniel E. Bilello ◽  
Gregory L. Brinkman ◽  
...  
Keyword(s):  
United States ◽  
The United States ◽  
Renewable Electricity ◽  
Electricity System

The Conundrum of Reform: A Comparative Analysis

1988 ◽  
Vol 8 (3) ◽  
pp. 3-16 ◽  
Author(s):  
Patricia W. Ingraham ◽  
B. Guy Peters
Keyword(s):  
Cultural Differences ◽  
Policy Design ◽  
The United States ◽  
Civil Service Reform ◽  
Political Processes ◽  
Design Considerations ◽  
The United Kingdom ◽  
Procedural Reform ◽  
The Relationship ◽  
Cross National

Despite obvious cross-national political and cultural differences, civil service reform policies exhibit strong similarities. An examination of reform efforts in the United States, the United Kingdom and Australia emphasizes the centrality of politics and political processes to administrative reform. This is true for mechanical or procedural reform, structural reform and what we termed “relational reforms,” or, reforms aimed at restructuring the relationship between politicians and career civil servants. The overriding influence of politics reduces policy design considerations and often results in solutions that do not match the problems being addressed. The outcomes are new bureaucratic problems and the need for additional reforms.

Solar Levelized Cost of Energy Projection in Indonesia

2021 ◽  
Author(s):  
Zainal Arifin ◽  
Agus Setiawan ◽  
Nugroho Adi Triyono ◽  
Eko Supriyono
Keyword(s):  
Levelized Cost ◽  
Cost Of Energy
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